Modelling of constant pressure expression of homogeneous semi-solid material
Mechanical expression is the separation of liquid from a two-phase solid/liquid system by compression due to movement of a retaining wall rather than pumping the solid/liquid system into a fixed chamber as in filtration. In this study, the basic consolidation equation was derived by combining the fu...
Saved in:
| Main Authors: | , |
|---|---|
| Format: | Conference or Workshop Item |
| Language: | English English |
| Published: |
2020
|
| Subjects: | |
| Online Access: | http://irep.iium.edu.my/86563/1/86563_MODELLING%20OF%20CONSTANT%20PRESSURE%20EXPRESSION-Abstract.pdf http://irep.iium.edu.my/86563/2/86563_MODELLING%20OF%20CONSTANT%20PRESSURE%20EXPRESSION-Poster.pdf http://irep.iium.edu.my/86563/ https://www.iium.edu.my/kulliyyah/koe/kerice-2020 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Summary: | Mechanical expression is the separation of liquid from a two-phase solid/liquid system by compression due to movement of a retaining wall rather than pumping the solid/liquid system into a fixed chamber as in filtration. In this study, the basic consolidation equation was derived by combining the fundamental equation for power law non-Newtonian flow through the cake with the equation of continuity and solved numerically using the Runge–Kutta method. As a model solid/liquid mixture, cellulose powder mixed with an aqueous solution of sodium polyacrylate was used. The mixture was preconsolidated under a constant pressure ps1, resulting in a homogeneous cake of thickness L1. Then it was expressed under a constant pressure p. The time course of the thickness L of the sample was measured. L∞ is the final thickness of the compressed cake. The agreement between calculated and experimental Uc was satisfactory when the creep effect was considered. |
|---|